Where would you like to sign in?

Suncor Energy reports oil sands production numbers for May 2008

Calgary, Alberta (June 4, 2008) — Suncor Energy Inc. reported today that production at its oil sands facility during May averaged approximately 164,000 barrels per day (bpd). Production for the month was reduced due to a planned maintenance shutdown of one of two oil sands upgraders that began May 16 with an expected duration of approximately 30 days. Year-to-date oil sands production at the end of May averaged approximately 225,000 bpd. Suncor is targeting average oil sands production of 275,000 to 285,000 bpd in 2008.

On a monthly basis, Suncor reports production numbers from its oil sands operation in order to provide stakeholders with a more timely review of operational performance. These numbers are preliminary and subject to adjustment. Monthly totals may differ from year-to-date total due to rounding, the impact of sales and changes in inventory. Production volumes will be confirmed when Suncor's second quarter results are released on July 24, 2008.

This news release contains a forward-looking statement identified by the word "targeting" that is based on Suncor's current expectations, estimates, projections and assumptions made in light of its experiences and the risks, uncertainties and other factors related to its business. Actual events could differ materially as a result of changes to Suncor's plans and the impact of events, risks and uncertainties discussed in Suncor's current annual information form, annual and quarterly reports to shareholders and other documents filed with regulatory authorities.

Suncor Energy Inc. is an integrated energy company headquartered in Calgary, Alberta. Suncor's oil sands business, located near Fort McMurray, Alberta, extracts and upgrades oil sands and markets refinery feedstock and diesel fuel, while operations throughout Western Canada produce natural gas. Suncor operates a refining and marketing business in Ontario with retail distribution under the Sunoco brand. U.S.A. downstream assets include refining operations in Colorado and retail sales in the Denver area under the Phillips 66® brand. Suncor's common shares (symbol: SU) are listed on the Toronto and New York stock exchanges.

Sunoco in Canada is separate and unrelated to Sunoco in the United States, which is owned by Sunoco Inc. of Philadelphia. Suncor Energy (U.S.A.) Inc. is an authorized licensee of the Phillips 66® brand and marks in the state of Colorado.